Not new and never was required on the state level. Yes, a probation or parole department absolutely could impose sex offender requirements on anyone they feel is a risk. But there is nothing in the law that states they must. This greatly varries from county to county.

Indecent exposure has never been a Megans/Adam Walsh trigger in Pa. If you know someone who is telling you that they were convicted of a streaking offense in Pennsylvania and as a result they were put on Megan's law, they are blowing smoke up your ass and there is more to the story.

Now if this guy was running naked while touching his penis or perhaps saying sexual things to strangers, then yes, that would end up with charges that would trigger Megan's law.

Here are the current trigger laws. https://www.meganslaw.psp.pa.gov/InformationalPages/CrimesCode