One of the problems with legislation/laws relates to definitions/interpretation of terms used in verbage.
Just what is "State developed open source"?

According to a TEA powerpoint (found by Googling) ...
resource:
http://ritter.tea.state.tx.us/textbooks/announcements/OpenSourceElectronic.ppt

“Open-source textbook” means an electronic textbook that is available for downloading from the Internet at no charge to a student and without requiring the purchase of an unlock code, membership, or other access or use charge, except for a charge to order an optional printed copy of all or part of the textbook.

"The state textbook fund may be used to purchase technological equipment necessary to support the use of electronic textbooks or instructional material included on the list adopted under Section 31.0231 or any textbook or material approved by the State Board of Education."

Then in HB 2488:
"The commissioner may establish a list of equipment or devices that a school district or open-enrollment charter school may purchase using textbook credits or textbook credits in combination with other available funds to provide electronic access to open-source textbooks."

and ...

"A school district could use textbooks funds allocated to the school district to purchase technological equipment according to rules adopted by the commissioner."

What others are saying:
http://opensource.com/education/10/1/open-source-textbooks-threat-texas-education

US National Educational Technology Plan
http://opensource.com/education/10/3/openness-and-us-national-educational-technology-plan

"The Department of Education has a role in stimulating the development and use of OER in ways that address pressing education issues. The federal government has proposed to invest $50 million per year for the next 10 years in creating an Online Skills Lab to develop exemplary next-generation instructional tools and resources for community colleges and workforce development programs. These materials will be available for use or adaptation with the least restrictive Creative Commons license. This work is expected to give further impetus to calls for open standards, system utilities, and competency-based assessments.

The OER movement begun in higher education should be more fully adopted throughout our K-16 public education system. For example, high-quality digital textbooks for standard courses such as algebra can be created by experts and funded by consortia arrangements and then made freely available as a public good. Open textbooks could significantly reduce the cost of education in primary and secondary as well as higher education. Textbooks constitute a significant portion of the government’s K-12 budget as well as the student-borne cost of higher education."

For Moodlers ...

The eBooks could be served from Moodle servers.

OER: Moodle: open source, closed doors

http://opensource.com/education/10/2/moodle-open-source-closed-doors

How many ISD Moodles are there in Texas?
How many have "opened their doors" to other students/teachers from other ISD's?
IF they have not, why not?

If a "neutral Moodle place/space" is needed:
http://moodle.tcea.org/mhub/

One in the process of construction between Area 3 ISD's:
http://moodle.tcea.org/area3hub/

NOTE: Areas 3,5,7,8,9,13,15,16,17 have Moodles on TCEA's Moodle Server.  HINT: for those Areas, there is your resource for a "neutral space" to begin sharing not only content, but the collective teaching expertise ... in any subject area or grade level.

With the coming of eBooks ...

Is there a purpose for "standards" in the formatting of ANY word processing document created for instructional purposes?

http://sos.tcea.org/index.php?option=com_content&view=article&id=521:thought--related-to-word-processing-&catid=93:kens-korner-general&Itemid=337