I'll bite on this, though ASBs will abound!
For whatever reason, the Soviets stay bogged down in Poland and Russia. This allows the Allied advance from France to flow through Germany and conquer all of Germany, Austria, Czech, etc. With the fall of Berlin, much of the Nazi warmachine surrenders, though some groups do hold out for a while, and are destroyed by the Red Army (mostly). Hitler probably still offs himself; many of the other suicides probably don't, as they get to contend with Allied justice (which will imprison them, but won't torture and execute them).
In the aftermath, Poland's eastern border is the Curzon line (more or less).
Germany is broken up into 4 pieces: one each for the US, the UK, France, and Poland (Poland's portion includes most of the parts of Germany that ITTL were annexed).
One interesting note is that in this time, almost all of the Concentration Camps are liberated by the Allies (OTL, many - if not most - are actually liberated by the Soviets). Auschwitz in particular gets to the Allies, who decide to essentially grant East Prussia as restitution to the Jewish people. The Zionists aren't too pleased with it, but they cant' exactly say "No", and so the Jewish State of East Prussia is born. Official languages include German, Polish, and Yiddish (the Litvish variety is standardized). Unlike OTL Israel, this state has none of the glamor or romance of the Holy Land; thus, attempts to establish Hebrew as the language or give the land a biblical name fail.
The Germans in this land are all relocated to Germany proper; though they spend a while in refugee camps (up to a decade in some cases), they're eventually all integrated into what is now the four German republics.
Germany is never reunited, as there is no need for it to be a bulwark against the Reds. Instead, Poland and East Prussia become the front line, and Marshall Plan aid money pours into the two nations at an alarming rate. Also, European migration into the Jewish state is higher than IOTL. Not only do we get all the survivors like OTL, but the UK and France encourage immigration to strengthen the nation against communist influences. Also, the border with Lithuania leaks like a sieve, and a large portion of Jews from the USSR manage to make it into East Prussia.