Not sure if this has been posted before. It's currently getting highlighted everyday on TFC

Effective 15 May 2014 CFO-Manila will launch an On-Line appointments system for Fiancé(e)’s and Spouses

Here's the press release.

Please take time to review.It's important because CFO will no longer entertain walk-ins from 15 May

Also note, it does appear that you cannot register until your visa has been issued.