The city government announced that it has lighted up the 7.2km stretch of C-6:
For those who aren't familiar with C-6, it's supposed to connect the SLEX with the NLEX via this route--SLEX -> Taguig--Angono, Rizal--Antipolo, Rizal--San Mateo, Rizal--Rodriguez(Montalban), Rizal--San Jose del Monte, Bulacan-->NLEX. I don't think the whole route is finished, but Taguig to Antipolo should be passable by now. I found a blog with pictures of the highway, as well as a nice discussion over at the Skyscraper city forum.
Back to Taguig though, it appears that the lighting project didn't end at C-6, as the following other areas reportedly got the same benefit: