New intel chips or just different name?

the i7 1156 are main stream i7s with the same things i7 1366 has except duo channel, DMI interface, and only 16x PCIE 2.0 (so 8/8 for sli/cf)

the i5-750 is the one that is true quad core

all the other i5s are dual core with ht and have igp on them, with turbo

all i3 are duals with ht and no turbo and igp

and the pentium - 1156 is going to be duals with no ht no turbo

all igp are just some crappy GMA stuff so nothing exciting at all on these new i7 i5 i3s

im using a core i7950.. this is stil considered the latest and greatest? not my particular chip I mean, but the technology behind the cor ei7

the feature and speed is, the manufacture process isn't but there won't be a jump to 32 nm for the 1366 stuff yet

but hey my i7-920 is OCed to 4 GHz and it can kick everyone of these new things' butt even if the newer i3/i5s can hit 4.6 or 4.7 on air, they are all dual cores and not quads

The socket 1156 is intel's midrange socket and socket 1366 (which your i7 950 uses) is still intel's high end socket. Intel has left the low end to AMD (as usual).  

The new CPUs are just Intel trying to fill out the lower range of their line. Really, they seem really over-priced to me for what they are- when you have the i5-750 true quad core for the same price as some of their new dual cores with a "graphics core" built in, why would you EVER buy the dual core? I mean, if you are spending $150 or more on a CPU, then you are probably already planning on buying a dedicated graphics card anyway right? And with AMD's true quad core Athlon II x4 at $100, why buy a dual core i3 for $115-120? Oh well- just my take on them.

They are different chips, yes. They aren't aimed at the same market though. The i7-950 is faster than any of the new stuff that came out, but also more power hungry and hotter. If you have an i7, I wouldn't worry about upgrading for quite a while.