I've just been playing with Dashcode beta - there is a disclaimer that it will stop working in the middle of July - I'm adding 2 + 2 here and getting 5 - but I'm thinking that the beta will be out for maximum of 1 months after v1.0 is
due out
bundled with Leopard. I know the sum is wrong - but I am starting to think a later date is more likely - based on what I've read elsewhere.
With regards to Feb 20th; Apple have still not listed anything for the 20th of Feb in their upcoming events - so I don't think it will be this month. However I don't know if they only announce an upcoming event once they've sent out those cryptic little invites to the media?? (Again based on what I've read - there is usually not a great deal of notice for an Apple Special Event).
Apple must [in some cases] be the starter of these rumours - they get everyone in a frenzy and must get loads of hits on their web site as people go to see if the latest rumour is true - each time one of these visitors turns up at Apple.com they [Apple] get another chance to sell something - and when they do launch 'the product' a huge number of threads and blog posts update those original posts - or make new posts directing people/web traffic straight to this new product - Win, Win, Win.
Oh btw - Dashcode is very cool - very easy to get it to do simple things - not so sure on the more difficult stuff yet though. - my favourite thing so far has been a little Mac-Forums RSS reader