I've stumbled across a leak from B&H photo detailing a new ZOOM handy recorder; H5.
Will be interesting to see how this works with the current Tascam DR-60D and DR-100mkII recorders, however I do know the H4N does have a number of problems, maybe it was time for an upgrade.. It is a sigh of relief for videographers, bands, journos who don't need the 6 channel power of the H6 but would like the option of external XLR/TRS microphone/device inputs.
Check out the article here - http://news.doddleme.com/equipment/zoom-announces-h5-handy-recorder/