Tex. Bus. Org. Code § 402.007
Chapter 8 governs any proposed indemnification by a domestic entity after the mandatory application date, regardless of whether the events on which the indemnification is based occurred before or after the mandatory application date. In a case in which indemnification is permitted but not required under Chapter 8, a provision relating to indemnification contained in the governing documents of a domestic entity on the mandatory application date that would otherwise have the effect of limiting the nature or type of indemnification permitted by Chapter 8 may not be construed after the mandatory application date as limiting the indemnification authorized by Chapter 8 unless the provision is intended to limit or restrict permissive indemnification under applicable law.
Tex. Bus. Org. Code § 402.007