WCF [Windows Communication Foundation]:

It is a unified programming model for developing service-oriented solutions for the Windows platform.

WPF [Windows Presentation Foundation]:

It is a new framework for developing rich interface applications with the support of animations, media elements such as Audio-Video and data services, etc.  

Inclined to build a profession as VB.Net Developer? Then here is the blog post on, explore VB.Net Training

Observation:

• WPF 3.0 supports only 2D
• WPF 3.5 has been enhanced with 3D and rich UI support.
• WPF 4.0 has been enhanced with touch support

 WF (Windows Workflow Foundation):

It is a set of activities that are used to coordinate the people and services.  

CS (Card space):

It is a new Framework provided to build high end secured applications using windows cards.  

LINQ (Language Integrated Query):

It is a new Framework introduced in .Net 3.5 for queering the data present within the collection database or XML.

Note: LINQ can also be used for data manipulations.  

VB.Net 4.0 or VB10:

It is a language with all the greatest features of all the latest languages such as C++, VB, Java, etc, and also the language consists of features that are needed for next-generation application development.    

For an in-depth knowledge, click on below

• Windows Forms Based Application in vb.net
• Working with typed Dataset in vb.net
• Introduction to VB.Net 4