Garbman 1300 lumens is a lot. You have to remember that technology moves forward fast and absolutely everything has a life cycle, nonetheless your Wilma is not dead, it will keep performing for many years and like I said, the last upgrade available for your model will be very significant!
off course we always want more, not because we need it but because we wanted
I have an "old" Betty and to be honest is not worth it to me to sell it and buy the new one because is so much light as it is, and I could even upgrade it 300-400 more lumens.
lastly remember that you could sell the headlight only to buy the new one since your battery and chargers work perfectly with any lighthead
cheers