Sorry, I thought I'd mentioned these in my Toy Fair report. They're like the Star Wars Comic Packs, two figures packed with a reprinted comic. They're commemorating the 25th anniversary. As it happens, I placed my order for the first two waves on Friday, ETA August and October.
The bad news is, it appears that the 3.75" Marvel Universe line won't be released in the UK, at least not this year. They are not in the catalogue. The supplier that I've ordered the Secret Wars from offered me the Universe figures, but with an RRP of £12.99 each and a wholesale price higher than the standard 3.75" price, I assumed they were imports and at that price decided to pass. There will be Wolverine and Spider-Man figures in the UK, to tie in with the cartoons and film.