With their phones and tablets, they have to get FCC approval (cos they're "communications devices"), which is a public process and would spoil the reveal, so they announce 3 months ahead of time.
Is that only for 3G etc enabled devices then? Because if it applies to wifi too then it should also apply to their computers. But yes, in general FCC approval does do a few things to timescales.
As for the launch event date, Feb 9 would fit, although I make no guesses about when it will actually go on sale. There was at least one rumour that the release would be staggered around the globe again, which even though unconfirmed means the article should have played it safe by not using the phrase 'UK launch date'.
I think someone on these forums previously pointed out that time period between announcement and it going onsale should not be as long as last time, as ipad 1 sales may suffer badly during the interim period. That makes some sense, although I have some vague memory of Apple not caring as much about this issue in the past as Id have thought they might, eg with at least one of the iphone new model paper launches coming a while before actual availability.
As for Apples need to move quickly before Honeycomb onslaught, Im sure Appletake this issue more seriously than their dismissive public statements about Android tablets would suggest. But they still have some time to play with, and could afford for the ipad 2 not to ship for some months yet. People already know an ipad 2 looms and so some will hold off any decision till they see the detail. When is honeycomb due anyhow?
In what ways will the ipad 2 be better at fighting off Android competition? I think its a safe bet that the cameras and speed bump will be the main things that keep the ipad competitive, with some of the other rumours such as screen res and usb/sd card being far from certain. And on a related note, I expect the ipad 2 announcement to be considered just as underwhelming as the original ipad launch event. Because again we have had rumours about device capability that may well not come true, leaving some to complain at the lack of res bump, usb or whatever turns out not to be in ipad2.
I cant imagine what ipad2 would have over ipad1 that would cause me to upgrade quickly, as I probably wont use the cameras much. If quality apps come out that require the greater performance of the ipad2 then I guess it may start to become compelling, and there is interest in the ipad at work from people so I can probably sell my ipad 1 pretty easily and for a reasonable price if I decide the 2 is worth it.