All the functionality in Algebra`Quaternions` is available in the newly created Quaternions Package.

All the functionality in Calculus`VariationalMethods` is now available through the newly created Variational Methods Package.

The functionality of Graphics`Legend` is now available from the newly created Plot Legends Package.

RevolutionPlot3D has been added to the built-in Mathematica kernel.

MultiPoissonDistribution has been renamed to MultivariatePoissonDistribution and is part of the built-in Mathematica kernel. HotellingTSquareDistribution has been added to ...

All the functionality of NumericalMath`ComputerArithmetic` is now available in the newly created Computer Arithmetic Package.

All the functionality of NumericalMath`GaussianQuadrature`is now available in the newly created Numerical Differential Equation Analysis Package.

The functionality of NumericalMath`ListIntegrate` is now accessible by using the built-in Mathematica kernel functions Integrate and Interpolation.

All the functionality of NumericalMath`NewtonCotes` is now available in the newly created Numerical Differential Equation Analysis Package.

All the functionality of NumericalMath`NLimit` is now available in the newly created Numerical Calculus Package.