rx1950 will be supported by vanilla kernel 2.6.37
All HW support patches for RX1950 were merged into appropriate -next trees, so 2.6.37 will support RX1950 out-of-the-box :) The only out-of-tree part is WiFi, it's supported by acx100-mac80211 project, this driver is missing proper rfkill support for now, probably I'll find some time to implement it.
Also some H1940-related patches were merged such as: gpiolib support for latch access, improved LCD/BL/MMC power functions. Probably sound support for H1940 will be merged aswell. Missing parts of H1940 are: battery monitoring/charging support, keys support and probably LEDs (leds-h1940 is obsoleted from now).
Kernelspace part is finished, but userspace part is just started (there's no usable rootfs for these PDAs still) :(
Update: it seems H1940 sound support will be merged only into 2.6.38 due to missing dependencies in sound-2.6 tree.