It seems that a few of us out there are having the same exact issue and there is no fix for it. I have been running a server for months, and when 2.7 update came out no one can connect to the server now. I have released/renewed my local ip and adjusted port forwarding. Canyouseeme.org tells me that my connection times out. I have turned off my antivirus, and allowed for port 25565 access in my firewall. The error people get is "Connection Timed Out".
I knew I couldn't be the only one. This describes my problem exactly: during server v 0.2.6, everything was fine, but now no one can connect. Tried the same things you have to no avail. Searching around hasn't yielded anything either.
Yeah I noticed that several servers were still up according to Minecraft.net stats. Unfortunately, haven't found anything new regarding this. Most of the other posts regarding connection timed out: connect are caused by other things.
All I run is a vanilla server, no mods/addons. No texture packs. It seems like since the update the way the server manages the port access is different. What router are you using AzureZenko? I am running a Linksys WRT54GV2 (not the blue and black box, the flat black one).