There has been alot of rumours regarding the release-date for these 2 products.
It seems that Apple currently plans to hold the announcement on the 7th of March for the release of iPad 3.
Some of the features are:
Along with the 2048×1536 Retina display, the iPad 3 will feature a quad-core Apple A6 system-on-a-chip, and possibly 4G LTE networking.
Read more here
The same site also has heard rumores that the iPhone 5 will be released in the fall of 2012.
Some of the rumored features can been seen here
Read more on the rumores regarding release-date here