Several Rikti Invasions Coming For CoH/CoV

Luckily, they sent a "Save the Date" notice.
Lighthouse has announced on the official forums that the Rikti are indeed back and invading! From yesterday (Friday, June 13th) through Thursday (June 19th) they'll be around, attacking Paragon City and Rogue Isle with devastating force. Luckily Vanguard has the drop on them, so you'll always know where and when they are coming shortly beforehand.
* When Zones within the cities are under attack, a world-wide alert will be issued by Vanguard. This alert will show up in your Chat window on the Event channel, warning you in which zone attack is imminent. If you haven't already, be sure to add the Event channel to one of your chat tabs.
* While the invasion is occurring, players do not receive debt while outdoors in an invaded zone.
* Those in that zone that do not wish to be at risk of Rikti attack are asked to take shelter immediately. They can do so by leaving the zone, or moving inside buildings or under cover (overpasses, parking garages, etc.).
* The combative inhabitants in a zone will move off the streets and to safer locations when a Rikti Invasion takes place.
* Rikti bombs appear to be unstable and not 100% reliable. Some do not explode on impact and only embed themselves in the ground. These bombs have been noted to detonate after a time, so take caution when you see these. They can be disarmed or delayed by inflicting damage upon them.
For the full information from Lighthouse, check out the City of Heroes Official Forums.