OP, welcome to Georgia.
The new law that went into effect May 8th, 2017 was part of HB 292. It allows you to carry on your Utah license for 90 days while you establish residency in GA and wait for the GWCL to be issued.
The OCGA code sections have not been updated yet, so here is the new law that went into effect when the Governor signed it.
http://www.legis.ga.gov/legislation/en-US/Display/20172018/HB/292
" SECTION 4.
98 Said part is further amended by revising subsections (e) and (f) of Code Section 16-11-126,
99 relating to having or carrying handguns, long guns, or other weapons, license requirement,
100 exceptions for homes, motor vehicles, private property, and other locations and conditions,
101 as follows:
102 "(e)(1)(A) Any person licensed to carry a handgun or weapon in any other state whose
103 laws recognize and give effect to a license issued pursuant to this part shall be
104 authorized to carry a weapon in this state, but only while the licensee is not a resident
105 of this state; provided, however, that such licensee:
106 (i) Such licensee licensed to carry a weapon in any other state shall carry the weapon
107 in compliance with the laws of this state; and
108 (ii) No other state shall be required to recognize and give effect to a license issued
109 pursuant to this part that is held by a person who is younger than 21 years of age.
110 (B) The Attorney General shall create and maintain on the Department of Law's
111 website a list of states whose laws recognize and give effect to a license issued pursuant
112 to this part.
113 (2) Any person who is not a weapons carry license holder in this state and who is
114 licensed to carry a weapon in any other state whose laws recognize and give effect to a
115 license issued pursuant to this part shall be authorized to carry a weapon in this state for
116 90 days after he or she becomes a resident of this state; provided, however, that such
117 person shall carry the weapon in compliance with the laws of this state, shall as soon as
118 practicable submit a weapons carry license application as provided for under Code
119 Section 16-11-129, and shall remain licensed in such other state for the duration of time
120 that he or she is a resident of this state but not a weapons carry license holder in this state. "