v4 blocks

[trout]

according to blocktrail.com , there are already > 13% "v4" blocks.

v4 corresponds to BIP 100

Are these actually BIP 100 blocks, or are they just putting v4 in the header?

Also, is this already discussed somewhere? It seems important (at least, if these
are actually v4 blocks) but I don't see any discussion anywhere.

According to the wiki BIP 100 is still a draft.
The wiki can lag behind though.

[domob]

I guess they belong, instead, to BIP65 (OP_CLTV) that was recently merged in the core code.

[Carlton Banks]

I guess they belong, instead, to BIP65 (OP_CLTV) that was recently merged in the core code.

Yep, version 4 blocks != BIP100