It's been 10 years since the launch of Skate 3, and fans are still waiting for EA to announce Skate 4. Unfortunately, it doesn't seem likely that any Skate 4 announcement will be made soon if information from professional skateboarder Jason Dill is to be believed.
Speaking on The Nine Club podcast, hosted by fellow skateboarder Chris Roberts, Dill revealed that EA approached him about appearing in a mobile version of Skate 3. "I got a call from the EA people about 10 months ago," Dill explained. According to Dill, he asked EA if there was something else it wanted him to appear in besides a mobile version of Skate 3, like Skate 4. However, EA indicated that it had no plans to make Skate 4, to which Dill reportedly replied, "Look, no big deal. No one wants your stupid mobile version of Skate 3. Make Skate ****ing 4 already!" Dill then wished EA "a lot of luck on Need for Speed 29" and reiterated that he would not be in a mobile version of Skate 3.
If EA is still pursuing a mobile version of Skate 3, it's unclear exactly when the game will be coming out. It's possible that the company realized that it would get a lot of backlash for releasing a mobile version of Skate 3 instead of a full-fledged Skate 4, and so has decided to shelve it. However, that's just speculation at this time.
In the same podcast, Dill also mentioned the previously leaked Tony Hawk video game that's reportedly due out in 2020, and he also spoke highly about the Skater XL game that's in development. Skater XL is a realism-focused skateboarding game clearly inspired by EA's Skate franchise that's due out for release at some point this summer across multiple platforms. Whether or not it can live up to Skate's legacy remains to be seen, however.
In the meantime, there is still some hope that EA will eventually move forward with Skate 4. EA renewed the Skate trademark at the end of 2019, which could be an indication that it still has plans for the franchise in some capacity. Of course, those plans could be mobile games instead of Skate 4, but at this point, some fans may be willing to take any kind of Skate game they can get.
Skate 4 is reportedly not in active development.
Source: The Nine Club (via IGN)