Plants vs. Zombies 2 is coming to iOS on July 18, with Crazy Dave returning with a new mixture of plants and levels to keep the dreaded zombies at bay. Of course, this time, it appears that time travel may be involved.

Developer PopCap gives some context to the "It's About Time" subtitle, mentioning past and future times with the new levels for the free-to-play game. It also reveals new powerups that will "supercharge" plants, although it doesn't mention if these will require a fee. PopCap does assure us that "players can face every zombie and access every level in every world at no cost."

"It’s about time!" Allen Murray, senior producer for Plants vs. Zombies 2, said in a release. "We're confident that players will see the love and attention we've put into this game. We've created wild new ways to experience the plants and zombies you know and love as well as packing the game with tons of completely new content, and we're still hard at work coming up with even more cool stuff that will keep Plants vs. Zombies 2 fresh and evolving in the months and years following launch."

Check out the new trailer for a hint at things to come for the iPhone and iPad.