Is there any good CompactFlash WiFi cards with Linux drivers out there which 
is not going obsolete short term?

-- 
Best Regards,
Ulf Samuelsson
This is intended to be my personal opinion which may,
or may bot be shared by my employer Atmel Nordic AB 

 Don't think so. CF is going away from PDAs, which is the market that
drove this niche a couple of years ago. Today PDAs come with the wlan
chipsets incorporated. Even wlan SDIO cards and USB dongles are a shaky
market for devices, and companies are focusing on Windows (Pocket
PC/CE/XPe).

 I used the Netgear MA201 for a project last year, which was the most
Linux-friendly CF card I could find. It is getting very difficult to
source now. I also tried a D-Link card but it was not very reliable
under Linux. I don't know if this one is easy to get hold to.

 Is USB not an option for you? You can use something that uses the
Ralink chips. I don't know if any company (in Asia, perhaps) is willing
to continue manufacturing CF cards for M2M devices. Perhaps you can go
through the WiFi Linux resources
[http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/] and ask in the
mailing lists.

 Regards.

                  /"Time and again I tell myself I'll stay
PabloBleyerKocik / clean tonight, but the little green wheels
 pablo          / are following me. Oh no not again!"
  @bleyer.org  / -- Ashes to ashes, David Bowie