The Bolshoi Ballet and its London promoters have confirmed wholesale casting changes to the Covent Garden tour starting next Monday, due to the last-minute absence of prima ballerina Svetlana Zakharova. Zakharova was due to give six performances, but has withdrawn due to a hip injury, it is said. Her partner the celebrated male star Nikolai Tsiskaridze has withdrawn from Giselle, and appearances by another senior ballerina Maria Alexandrova have also been reduced.

The Bolshoi Ballet and its London promoters have confirmed wholesale casting changes to the Covent Garden tour starting next Monday, due to the last-minute absence of prima ballerina Svetlana Zakharova. Zakharova was due to give six performances, but has withdrawn due to a hip injury, it is said. Her partner the celebrated male star Nikolai Tsiskaridze has withdrawn from Giselle, and appearances by another senior ballerina Maria Alexandrova have also been reduced.

The annual tradition that is the Royal Ballet School Matinee at Covent Garden isn’t just some prestige indulgence for the nervous parents of ballet children fortunate enough to survive the militaristic training and dogged enough to want to continue into the beckoning career where there are such frail job prospects. It is a place where the gap between a good student and a potential artist comes clear through the sheer size and one-offness of the occasion.

The gallery has been turned into a little girl’s dressing-up closet. The walls are painted midnight blue and dusted with glitter. Ballet shoes, made for small feet, and a discarded tutu are to be found in a decorous pile on the floor. There are shiny trinkets and princessy things and pictures of ballerinas in bright, pastel shades. And miniature cabinets, almost empty but for one or two small objects – old, discardable things that might be hoarded away as treasures by a child wrapped up in its own imaginary world.

Hans van Manen does basic instincts in ballet better than anyone alive. The Dutch choreographer, nearly 78 and far too little exposed in Britain, is a near-contemporary of Kenneth MacMillan, another specialist in sexual relations, but where MacMillan is fascinatingly drenched in guilt, Van Manen takes a bold, guilt-free stand. Grosse Fuge, which Birmingham Royal Ballet revived in the Hippodrome last night in a smart triple bill to entertain all tastes, is all about mating display - four men in black oriental skirts and big-buckled belts, four women in beige Playtex-type corsets that give them mumsy boobs and look unusually sexy.

Within two bars of the overture starting, the first flashes could be seen. English National Ballet’s arena Swan Lake at the Albert Hall - they make no bones about it now - is intended for people who rarely go to the ballet. Actually it is in many cases for people who have no compunction about talking and taking pictures through the ballet quite routinely.

A second coming for Michael Clark's recent Barbican commission Come, Been, Gone. Eight months after the London premiere (on which I opined unenthusiastically below last October), he has added another 20 minutes of choreography, they said, with new costumes and artworks. The revision is also now artfully retitled Come, Been and Gone. Not comma-Gone. And Gone. Makes all the difference.

What is going on at New York City Ballet, home of the abstract, neo-classical, pared-down, no-scenery, no-story, nothing-extraneous aesthetic that George Balanchine made into an artistic religion? So far, three out of the four pieces commissioned for the company’s ambitious “Architecture of Dance” festival have been - more or less - story ballets (only Wayne McGregor has resisted the lure). Alexei Ratmansky’s Namouna offered a dizzying whirl through a faux-19th-century ballet, complete with mystifying characters, impossible plot and glorious choreography.

In the New York City Ballet’s grand tradition of ambitious festivals of new work, its current offering, Architecture of Dance, is a big, ambitious deal: seven new ballets; four of them to commissioned scores; five sporting sets by the famed architect Santiago Calatrava. Three of the works are by the men who are arguably the most exciting ballet-makers in the world right now: Alexei Ratmansky, Wayne McGregor and Christopher Wheeldon.

Johan Persson took the photographs for The Royal Ballet's world premiere of Liam Scarlett's Asphodel Meadows, which opened on 5 May 2010. Read theartsdesk's review of the ballet here.