Official on store shelves launch is reported to be next week (December 12th), but with listings already up in Japan, these are fairly concrete specs on the 5500XT, though pricing may vary. Still, considering in the product stack this replaces the RX 560, as AMD compares it to the GTX 1650 Super meaning it IS the entry level card, and the RX 560 launched at $99, AMD's practice of doubling the price for a successor card, sadly, continues. Also, the TDP is about twice the GTX 1650, so it appears AMD and TSMC have not improved efficiency of Navi or the 7nm process yet.
Not sure what junky websites you have been reading, but the RX 5500 has already been benchmarked and reviewed. It doesn't replace the 560...it replaces the ENTIRE 500 series, as it performs very similar to a RX 580, at stock speeds. That is a BIG difference. Also, average tested power draw was 113W. You are seriously trying to say that getting near RX590 levels of performance at literally half the power draw isn't a massive efficiency increase?
AMD Radeon RX 5500 Review | TechPowerUp