Odyssey hits for EVE Online, it's going to be a whole new ballgame for many of its ships. CCP is planning to revamp and restructure its Navy faction ships across the board and has written up a nice fat post about the upcoming changes.
Odyssey will feature 40 revamped hulls, including four brand-new ones. This is being done to fit in with the ongoing ship balancing project that's seeking to kill tiers off in a brutal and uncompromising fashion. It also bring the hulls in line with a "Navy" theme that will be featured in the expansion.
There are a lot of changes to absorb, including a change-up to 23 ship skills, a division of cruisers into attack and combat categories, and a rebalancing of Tech 1 battleships.