As far as I know, European production of the Walther PP series has ended, so no new guns are available.
Currently S&W is producing new PPK/s and I think PPK pistols here in the US.
As for having a "German" gun, there ARE NONE, and there haven't been since 1945.
A little known fact is, that after WWII the Walther company contracted with the French Manurhin company to produce Walther firearms.
After Walther took back production of most guns like the P-38, they left production of the PP series guns in France.
Manurhin produced the guns, they were trucked over the German border to the Walther plant at Ulm, proof fired, stamped "Made in Germany, blued and sold all over the world as German made guns.
To be fair, in Europe this is a common industrial practice, and the country where a gun is proof tested is considered to be the country of manufacture.
All this was made public in the early 1970's when Interarms began producing Walther PP series guns in the USA.
Over the years, the gun magazines did their routine "round-up" articles on pocket autos, and the Walther's were always described as "Typical German quality" and " Great Teutonic workmanship".
After Interarms began production, these same writers blandly informed us that the French had been the real producers of the guns after 1945, and that they had always known this little fact, which they failed to tell us.
Some of you may remember the Walther/Manuhin "War" in the gun magazines in the mid-80's.
Something changed in the agreement between the companies, and Manurhin began to import a PPK/s under their name.
Walther put out magazine ads that claimed that THEY were the only true model, and mManurhin put out ads stating that since THEY had been the only maker since WWII, THEY were the "true" version.
After about a year, Walther made a deal, and Manurhin stopped importing guns under their name.
Currently the new Walther/S&W PP series guns are getting mixed reviews.
Early guns apparently had problems, but current factory-fresh guns seem to be reliable and well-liked.