Developer nervegas appears to be kicking it into overdrive lately, as a new build for the iPhone's NES.app emulator gets released for use. The latest build for this InfoNES-based NES emulator hosts a new batch of fixes and updates, including an enlargement of the "size" of the start and select buttons upon the iPhone's touch screen. Here are the changes since RC3:

• Added back suspend support
• Moved "Frame Skip" option to "Advanced Options"
• Enlarged hot spots for select/start
• Suspend only when game is in emulation mode - otherwise quit
• Fixed frequency sweeping for wave channels 1/2 (in other words, fixed mario jump sounds, punchout ko, etc)
• More improvements to sound buffering
  

As with previous releases, NES.app 1.00 RC4's details are available in the file readme included with the bundle. Also be sure to drop by nervegas' site (the source link) if you're looking for more details.

Download: NESapp 1.00 RC4