As it turns out, they're quite different and will no doubt affect Abyss PvP in numerous ways. For example, prime time fortress sieges used to happen in a three-hour window, which pretty much meant that if you committed to attacking or defending, you missed out on Dredgion groups and basically any other content going on for that particular night. Now, the siege timers are staggered. In addition to the timers being reduced to two hours, there's also an hour block in between, which should give players time to do things other than siege on any given night.
Additionally, the previous fortress vulnerabilities were a convoluted mess, with a mixture of upper and lower forts going on at once. Now, the vulnerable forts will be on a single layer, and there will also be five vulnerable forts simultaneously as opposed to three. This should lead to new strategies, as the zerg will no longer be able to bum-rush three locations at once, and there will theoretically be more sustained fighting going throughout the Abyss.
