If you have (or can find) a Sony camcorder with Night shot it will do that for you.  The still resolution is not good, and you will need a neutral density filter for sunlit shots, but it is IR.

Thanks, Bob, for the links.  I have a Canon XT in addition to my 40D and 5D so now I'm thinking of converting it for IR!

I don't believe so. You can, of course, use an IR-pass/visible-block filter in front of any P&S camera capable of taking filters, but results may not be great since exposure times may be long and auto exposure may not work well. If you wanted to try this you'd be best off with a camera that offered manual control of shutter speed and aperture.

The other alternative is to have a camera converted. There are quite a few places that offer conversions on both DSLRs and P&S cameras. For example see http://www.lifepixel.com/IR.htm and http://spencerscamera.com/default.aspx

Does anyone know if any point-and-shoot has IR capabiliity (as an option or IR-only)? 

When the new ones are released, the old ones will be discontinued (though they'll be available from a few vendors while stock lasts).

The good news is that you might see a small price drop on the MkII versions, though if the new ones sell initially for $500 each (which is what I expect will happen) the current prices might hold since that are already about $200 cheaper.

I suspect the MkIII versions will not be all that much better, especially with older lenses. You might see a difference if you also buy one of the new 300/2.8 II, 400/2.8 II, 500/4 II or 600/4 II lenses since one of the Canon reps I spoke with said that the new TCs were optimized for the new "L" lenses (though of course I assume that they will still work very well with the older lenses, just as the MkI and MkII TCs do).

When I tested the MkII TCs against the original MkI versions I found the difference to be very small with the lenses I had. Small enough that I didn't bother to upgrade.

If I get a chance I'll certainly be testing the MkIII TCs, assuming I can also get a 300/2.8L IS II to test them on! I suspect that's very unlikely to happen this year, but maybe early next year.

 Canon 1.4x II ($300)
 Canon 2x II ($310)

Does this mean that the existing extenders will no longer be available?
Ken Lindup

I covered them in my recent article on new Canon lenses:

http://www.bobatkins.com/photography/reviews/Canon_EF_L_lenses_fall_2010.html

Expect to see them in late December at a price of $500 each

These are new teleconverters on the Canon website:
http://www.usa.canon.com/cusa/consumer/products/cameras/ef_lens_lineup/extender_ef_1_4x_iii

http://www.usa.canon.com/cusa/consumer/products/cameras/ef_lens_lineup/extender_ef_2x_iii

Apart from press releases, I haven't seen them advertised for actual sale.  Anyone have more information?  How are they different from the II teleconverters?

I would say if you have an issue with your current camera that is preventing you from getting the shots you want (AF, ISO quality, etc) and it is resolved by a current camera that you can afford then get it as soon as possible. The longer you have it the longer it will provide you great pictures. Waiting for the next great thing is endless and all it means is that you're still shooting with the camera that's holding you back.

If you're getting the shots you want with your current gear then wait. But don't wait for the next camera. Wait until your shooting style or aspirations pushes you into the category above. There's no need to upgrade for it's own sake.

At least not from a photography point of view. If you just like new gear that's a completely different story. Can't help you there.

No, the 7D probably has a year or two to go before it gets updated.

Probably the most likely candidate for update is the 1Ds MkIII which is the last remaining camera in the EOS lineup without the capability of shooting video. I'd expect to see a new model within 12 months - but of course I could be wrong, I have no inside info, it's just a guess.