Just a routine re-issue of delegations of authority under a law that's been around more than 60 years. And that law just replaced earlier laws that have been around since Georga Washington.
These orders get updated for all sorts of reasons-- a typical one being when they rename a Department or bureau somewhere. Here's a small handful of the orders that preceded it.
Sec. 606. All orders, regulations, rulings, certificates, directives and other actions relating to any function affected by this order shall remain in effect except as they are inconsistent herewith or are hereafter amended or revoked under proper authority, and nothing in this order shall affect the validity or force of anything heretofore done under previous delegations or other assignment of authority under the Defense Production Act of 1950 as amended.
Sec. 607. The following are superseded or revoked:
(1) Executive Order No. 10161 of September 9, 1950 (15 FR 6105).
(2) Executive Order No. 10169 of October 11, 1950 (15 FR 6901).
(3) Executive Order No. 10193 of December 16, 1950 (15 FR 9031).
(4) Executive Order No. 10200 of January 3, 1951 (16 FR 61).
(5) Executive Order No. 10223 of March 10, 1951 (16 FR 2247).
(6) Executive Order No. 10281 of August 28, 1951 (16 FR 8789).
(7) Executive Order No. 10324 of February 6, 1952 (17 FR 1171).
(8) Executive Order No. 10359 of June 9, 1952 (17 FR 5269).
(9) Executive Order No. 10373 of July 14, 1952 (17 FR 6425).
(10 Executive Order No. 10377 of July 25, 1952 (17 FR 6891).
(11 Executive Order No. 10390 of August 30, 1952 (17 FR 7995).
(12 Executive Order No. 10433 of February 4, 1953 (18 FR 761).
(13 Executive Order No. 10467 of June 30, 1953 (18 FR 3777).
Sec. 608. To the extent that any provision of any prior Executive Order (including Executive Order No. 10461 of June 17, 1953 (18 FR 3513)) is inconsistent with the provisions of this order, the latter shall control and such prior provision is amended accordingly. The following designated orders, modified as required to conform them to the provisions of this order, shall remain in effect:
Executive Order No. 10182 of November 21, 1950 (15 FR 8013), as amended by
Executive Order No. 10205 of January 16, 1951 (16 FR 419).
Executive Order No. 10219 of February 28, 1951 (16 FR 1983).
Executive Order No. 10224 of March 15, 1951 (16 FR 2543).
You can find them here:
Executive Orders
Just bureaucratic housekeeping.