The upcoming Sandy Bridge chips from Intel will carry the Core i3/i5/i7 names just like the current Nehalem chips. However, to avoid confusion with the current lineup, Intel will add 2000 to the Sandy Bridge chips. In this way, a Core i7 930 will become a Core i7 2930. It sounds a little weird but it is probably the best solution out there. The Sandy Bridge chips will release in the first quarter of 2011 as dual or quad core chips with an IGP on the same chip. These first chips will be fitting into the new 1155 socket. The six and eight core chips will release later in 2011 and fit into the new 2011 socket. Hopefully Intel will keep the Core names simple this time so that the six and eight cores will be under Core i7, the quad cores under Core i5, and the dual cores under Core i3.
Final details on the Sandy Bridge chips should be out before the end of this year.