Here's a cool new reverb plugin which claims to harmonically trace and 'fit' around your input signal. ADAPTIVERB also has a few party tricks on offer too.
Emulating the guts of the Hammond B3 vibrato system and turning it into a plugin for organs that don't have one - if you can find any.
Cloak Audio have just announce a new hand-built fuzz pedal: the Jackdaw. This pedal is not for the faint-hearted and has a unique 'cocked wah' vocal-like filter section.