Some players, like Gata Kamsky and Vladimir Kramnik, are planning to retire relatively soon; others, like Yasser Seirawan and now Matthew Sadler, are at least creeping out of retirement. Sadler played successfully in a couple of minor events fairly recently (at least one of which was rapid chess), but now he has managed to win a reasonably strong, deep (25 GMs) open Swiss event. His score of 8.5/10, with a last-round win over top seed Jan Smeets (Sadler was three points lower-rated) gave him clear first, ahead of four players on 8.
During his full-time chess career Sadler was a very strong and entertaining player, and as he still isn't terribly old it would be nice to see him get back up there with the big boys again.
Sants Open website here.