Kelley,
That could be a possibility, as I believe that analog-metered metal detector's days are numbered. It will most likely become a niche market, custom or build-to-order product over the next 5-10 years, at which point it will probably disappear forever as a stocked product by any company. Soon, only used analog's will be available, with nothing new viable.
It takes a lot of money and a big investment to make a 'production run' of metal detectors. Just imagine what the cost is to make 500-1000 metal detectors at a time. A large company like White's cannot simply 'crank out' a few at a time. They must build them in high volume. So, if their sales/marketing people feel there is no longer a viable market, there is no way they are going to tie up their time and money sitting on inventory that may not sell (turn) for years to come. This is most likely why the XL Pro was discontinued.
On the other hand, a small 'mom & pop' type manufacturing operation can usually make a few detectors at a time (profitably) but those units usually sell for much more money as they are time consuming to build and parts costs are much higher as they are not purchased in high-volume, discounted prices.
As a side note, there is an interesting detector that is a combination of both analog and digital technology that holds hope of becoming an almost perfect metal detector ... especially for coinshooting ... at least in my opinion.
The Tesoro Cortes as it currently is, is an impressive metal detector. I love its small size and light weight. It has a good combination of features and performs well. I believe that the Cortes could be a great, even fantastic metal detector though. Even though it is not an analog-metered unit, the 'real' switches and control knobs give it the feel of an analog unit. Here's what I would do, if I were to redesign it:
1) It would use Tesoro's new HOT technology.
2) It would have a trigger mode/pinpointing switch like on the Tejon.
3) It would have tone ID in the Disc mode with at least 3 to 5 tones covering a WIDE highly-discernable audio range. The tone ID would have a panel switch to enable or disable - so the detector could be used in single-tone mode or tone-ID mode.
4) It would have a panel switch to select either VCO or non-motion modulated audio in the pinpoint mode.
5) The display should be larger.
6) The standard coil should be a 7-8" size. Their current 7" coil is awesome for most detecting.
7) The ID meter should work in both disc and all metal modes.

It MUST have a manual ground balance in the disc mode or some type of automatic ground balance and tracking.
I like the quick and easy notch-setting feature of the Cortes. It should be kept as is. The digital ID meter information is also very good with its combination of ID number, bars, and labels.
I know these refinements sound like a lot to ask, but I do not believe they are. I think that these changes would make the Cortes a very 'hot' metal detector with much demand. I know that I would be one of the first in line to buy it!
Oh well ... I've rambled enough.
Joe