I called today and inquired about a new Sony PCM-M10 and was advised by my dealer that Sony has announced that the M-10 will be discontinued.
For those dealers that have no stock, prices may creep a little higher, as Sony is not discounting the unit.
For those dealers that have large stock supplies, you may see prices dip below $200.
I found a unit at Guitar Center, for in stock items only, for $170 free shipping. B&H has it for $199 free shipping. Sweetwater has it for $250.
No replacement model has been announced, but I assume an announcement is forthcoming.