John Gruber:

my gut feeling is that Apple will move the iPad to a September release schedule, alongside the iPods. But they wouldn’t want to wait over a year and a half from the announcement of the original iPad to announce the second one — not with these stakes, and not with so many serious competitors trying their best to catch up.

He believes Apple will release a new iPad in March or April and in September alongside their new iPods. It seems a bit too aggressive, if you ask me. But, it’s hard to argue with his explanation.