I claim, and offer, no inside information as to whether BPD intends to implement encryption on the patrol channels (F1 through F7). However, for those who wish to speculate, some details are in order.
Motorola essentially offers two forms of encryption in a P25 world. One, called ADP, uses the radio codeplug and the CPS to handle bit hashing and key management. CPS-ADP is essentially a free option. There is a consensus amongst those in the public safety world that ADP encryption is not secure enough for public safety communications warranting encryption, and as a result it is not widely used for that purpose.
The other form uses a separate module, called a UCM, that has to be installed in each subscriber; the UCM handles bit hashing and key programming has to be done via a keyloader, which much physically touch each subscriber. This implies a potentially hefty hardware and overhead cost to UCM encryption.
Both XTS and APX radios render CPS-based ADP and UCM encryption as exclusive options; that is to say, if you install and activate a UCM, you cannot simultaneously implement CPS-based ADP on other channels. (One can, if desired, employ a multi-format UCM and program one of its formats to match the ADP format, but since one would already have to incur the costs and other burdens of UCM encryption, using the UCM to implement the ADP format has no real world practical value except where it might be necessary to maintain interoperability with some other CPS-ADP based system.)
Given that BPD has operated without encryption on its patrol channels for decades without issue, and that BPD already has (and will continue to have) encryption on other channels for those occasions where it is considered necessary, one probably shouldn't bet the lunch money that the patrol channels will be encrypted.