Title: Preannouncement on the company's name change

We sincerely appreciate your patronage over the past years.
As a result of the expansion of our business performance, we are planning to rename our company name as 新社名, replacing the current name 旧社名, as of (date).
This is to clarify our corporate identity and enhance the image of our company.
Along with launching the new name and corporate dentity, we will all focus on increasing the level of professionalism. We truly appreciate your continued support, just as you have supported us in the past.
We will officially announce the new name of the company name as soon as it has been approved by a general meeting of stockholders on (date).

New company name: XXXX
Effective date: XXXX

I think it's ok like this.