Seriously, you people can't see the forest for the trees.
Q1: 1H: Verizon iPhone; 2H: iPad 2
Q2: 1H: MBs/MBPs, 2H: iPhone 5
Q3: 1H: iMacs, 2H: iPods
Q4: None usually, but last year was MBA
Apple is a business. They have to meet sales expectations. That can't happen if you just up and release everything new in January (and it's not like they can split their dev teams up so that releases can be timed to do that anyway). Bottom line: it's not "time" for a product update until Apple has a hole in the calendar. You would think after years of people bitching about "where's the MBP update?!?!??!?!??!" you would've figured this out by now.
Also, history shows Apple is not in the business of pre-announcing products once the product line has been launched. The iPad 2 and the Verizon iPhone will not both be coming out at the same time, and the iPad 2 will not be preannounced more than a week or two before it's ready for stocking. If we get anything at a Verizon iPhone presentation besides Verizon iPhone changes, it'll be an iOS 4.5 preview.