It looks like a new SP-404 MKII in the works. via Synthtopia:
"Key Features (preliminary):
Bang out beats anywhere with AA or mobile battery power
Capture audio from or stream direct to your mobile device via USB,
Collaborate with a partner using the dual headphone outputs and mic/guitar input.
Edit samples with an OLED screen and zoomable waveform view.
Chop up samples by tapping out edit points in real time, or use auto chop to slice samples automatically.
Shape samples with envelope and pitch shift
New resampling workflow lets you re-record patterns and effects layers for detailed sound design.
Skip Back Sampling captures up to 25 seconds of audio from your performance.
Process, flip, and twist your sounds with classic SP effects and a selection of new effects, including: Lo-fi, Cassette Simulator, Resonator, Vocoder, Auto Pitch, Guitar Amp Simulator and more.
Adjustable input quantize and shuffle for custom swing.
Pad Link lets you fire multiple samples with a single tap.
Roll button for variable note repeat.
BPM-per-bank for instant tempo changes.
Organize patterns for different sets and chain them together to automate playback.
Load 160 samples across each project for expanded performance and beatmaking combinations.
Official details on the Roland SP-404 mkII are still to be announced."
