Umm, how about Whistler re-introducing the PSR500 and retailing it for ~$350?
I realize we are comparing apples with oranges here, but how many 436HP sales are going to evaporate overnight once your competitor brings a digital scanner to market for $150 less than your latest show pony? Sure, some will need the Phase 2 capability of the HP scanners, but not all..
Uniden seem to be claiming that the 4/536HP scanners are the cream of the crop, best of the best or top of the range. That's all fine, but not everybody wants/needs/can afford the top of the line scanner..
The 396XT on the other hand has proved to be a tough, reliable little performer over the last 4 - 5 years, but it is likely reaching the product's EOL. An updated 396XT with improved audio (the existing 396XT audio is terrible on head/earphones), some minor firmware fixes to increase the talkgroup capacity and maybe even a minor external facelift and then retailed for ~$350 would fill the void nicely between the 346XT and the 436HP scanner lineup. Not to mention, it would give the new Whistler PSR500's some serious sales competition. A $150 'premium' applied to the 436HP seems appropriate for the additional bells and whistles minus the cost of batteries, wall charger etc.
Anyway, we'll see what eventuates but I know for a fact that Uniden are currently selling many hundreds, if not thousands of 396XT's into other markets (Countries) that do not utilize phase 2 in a big way, with potential for many more to be sold over the next few years as more P25 Phase 1 networks continue to be rolled out. It would be a shame if this model/form factor and price point were completely discarded by Uniden.
Regardless, clearly Uniden can't keep selling the 396XT for $499 if the new model is the same RRP.
I would not expect to get any indication from Uniden that there may be another 'lower spec' digital scanner in the works as this would potentially impact on the hype surrounding the release of the 4/536HP units. There is also little pressure from it's competitor at the moment, but this would change very quickly if Whistler get it's act together and starts shipping product.
Therefore, I predict that any new 'lower tier' digital product announcements won't materialize until the new HP units have been on the market for a few months, the pent up demand/hype for the high end models has stabilized and Whistler bring their models to market.