The mosts noticable change has occured in the Jedi Order itself. Not wanting to repeat the mistakes of it's past, the Order has become exceedingly strict with it's knights by reverting to the old ways.
--- A child must begin his training before the age of five.
--- A child must become apprenticed to a Master or Knight of high standing by the age of thirteen.
--- A knight must adhere to the strictist of moral codes. To do otherwise would risk censure, imprisonment, or in extreem cases, breaking of all connection to the Force.
These guidlines are indeed strict but acceptable. No one can simply become a Jedi in their spare time. The fact that there are still so few means all must work harder to contain the everpresent darknesses in the Galaxy.
Since the day Leia Organa Solo stepped down as the Leader of the Galactic Senate, the Jedi have not strayed far from politics. In fact, the recently elected Supreme Chancelor is a Jedi Knight of the Noblist standing. Indeed, all jedi liasons to the senate have proved to be champions of truth and honor.
Since the days of Luke Skywalker, four jedi schools have been built. Four "clans" have trained this, the New Order of Jedi.
The Praxium
"The Skywalker Clan"
Yavin Four
Since the days of Master Luke, a Skywalker has always sat at the head of this school. The current Master is Ostun Skywalker, who is also one of the most influential members of the Jedi Council.
The Solo Academy
"The Solo Clan"
Couruscant
The Solos and their students have always prefered a more passive approach compared to the Praxium's more action oriented teachings.
The Solo Academy students are recognized by their crimson blades ih honor of the first Solo Jedi, Leia Organa Solo. The Academy is led by the Council Member and Solo decendent, Ness.
The Wander Academy
"The Wander Clan"
Van Door
Wander students are known for being far more rooted in nature than other jedi, prefering to fight with natural elements instead of weapons, but this is by no means a given.
Distinguished by their green blades, two prominent students of this school are Kaz Maekon and Vin Wander, the son of Vico.
The Temple of Light
"The Sim-Tin-Mara Clan"
Wimara
Led by council member, Xane Mox, they have remained a quiet presence in the Republic. Their students are known to be master craftsmen and artists, but few have been seen in battle. Some on the Council, including Ostun Skywalker consider the Temple to be dead weight but other more even headed members consider the Sim-Tin-Mara to be a much needed anchor of peace and ever present light during turbulent times.
In most cases a Temple Knight can be distinguished by a yellow blade, but this is not always the case.