Geode, split into GX, LX and NX variants, serviced the 0.9W-5W area, but, now, AMD says that it won't be launching a successor to Geode LX, the mainstream part, anytime soon. Rather, it will be focussing its efforts on introducing a lower-power Neo processor, which is a part of the current Yukon mobile platform.
Thinking about it further, AMD cannot fight too many battles currently, appreciating the financial straits that it's in, and ending the life of Geode is, perhaps, a wise move. It would have continued to find it difficult against newer offerings from low-power (SoC) experts such as ARM, and Intel's very own Atom CPU has stolen much of the thunder in the thin client/netbook space.
What's worrying, however, is AMD's plans to fight in the burgeoning netbook market, especially the cheap-and-cheerful low end, where Atom takes most of the design wins. What it needs is an x86-based CPU, with reasonable grunt, which is insanely cheap to produce, and has a power-efficient chipset in support. Neo, whilst good enough for larger laptops, doesn't quite fit the sub-1kg netbook criteria.