From the Grammar viewpont veraltet and veraltend are, respectively, the Partizip II and Partizip I of the verb veralten, which means become obsolete. The Partizip I is formed as follows:

Infinitiv+d [+Adjektiv Endung, if needed]

You are right. The in the form of Partizip II the verb means that it is already obsolete, out-dated, while the Partizip I means, in the process of becoming obsolete.

From the Grammar viewpont veraltet and veraltend are, respectively, the Partizip II and Partizip I of the verb veralten, which means become obsolete. The Partizip I is formed as follows:

Infinitiv+d [+Adjektiv Endung, if needed]

You are right. The in the form of Partizip II the verb means that it is already obsolete, out-dated, while the Partizip I means, in the process of becoming obsolete, z.B.

• schnell veraltende Methoden (methods rapidly becoming obsolete)
• veraltete Methoden (the obsolete methods)

From the Grammar viewpont veraltet and veraltend are, respectively, the Partizip II and Partizip I of the verb veralten, which means become obsolete. The Partizip I is formed as follows:

Infinitiv+d [+Adjektiv Endung, if needed]

You are right. The in the form of Partizip II the verb means that it's already obsolete, out-dated, while the Partizip I means, in the process of becoming obsolete.

From the Grammar viewpont veraltet and veraltend are, respectively, the Partizip II and Partizip I of the verb veralten, which means become obsolete. The Partizip I is formed as follows:

Infinitiv+d [+Adjektiv Endung, if needed]

You are right. The in the form of Partizip II the verb means that it is already obsolete, out-dated, while the Partizip I means, in the process of becoming obsolete.