The tablet was a foregone conclusion. Since late last year even if Apple didn’t want to build one, investors pretty much forced it upon them with the hype. Failure to produce at least a proof of concept by the end of the quarter would really hurt the stock.
With it presumably comes iPhone OS 4.0 preview for developers.
Either tomorrow or next month Apple will announce an update to the MacBook Pro lineup. It’s now 232 days since the last update (avg 200) and will likely get Core i5 and Core i7’s and slight hardware tweaks. I think Blu-Ray is still 50/50. Apple might hold this until early or mid February so it’s not overshadowed by the tablet announcement.
Likely a few other tweaks to the lineups, perhaps a CPU bump on the Mac Pro’s and perhaps a small tweak to the iPod lineup (more storage, new colors nothing major) though I expect the iPod/iPhone focus to be in June not now.