"Rick and Morty" Season 3 will run longer than the previous episodes with "XXX: Return of Xander Cage" actor Vin Diesel playing a pivotal character. Plus, new characters are going to be introduced when the adult animated series returns summer next year.

The 3rd season of "Rick and Morty" has officially been extended. According to Yahoo! Tech, Adult Swim has ordered four more episodes for a total of 15 episodes instead of the usual 11-episodic run.

Other than that, Vin Diesel has been rumored to make a guest appearance in "Rick and Morty" Season 3. Parent Herald reported that the 49-year old American actor, producer, director and screenwriter is said to be the voice actor behind the character of D&D.

Such rumors stemmed when series co-creator Dan Harmon tapped Vin Diesel to dub the pivotal character during his speech in the San Diego Comic-Con.

Vin Diesel is yet to agree whether or not he will join the fun with Rick and Morty or not.

In addition, speculations suggest that new characters will be introduced to the adult animated series. iTech Post has mentioned that Summer Smith (voiced by Spencer Grammer), the other granddaughter of Rick, will be added to assist Mortimer "Morty" Smith Sr. in helping her grandfather escaped jail.

It has been featured in the second season that Summer's grandfather has been sentenced to life imprisonment in a Federal prison.

As of now, the official premiere date of "Rick and Morty" Season 3 has not been officially announced by the series creators and the network just yet. However, speculations suggest that the adult animated series is expected to air around April 2017 on Adult Swim.

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